{"id":1174,"date":"2021-03-04T17:26:00","date_gmt":"2021-03-04T16:26:00","guid":{"rendered":"https:\/\/hervejoly.fr\/?p=1174"},"modified":"2021-03-04T17:26:00","modified_gmt":"2021-03-04T16:26:00","slug":"les-pcbs-en-pays-de-lor","status":"publish","type":"post","link":"https:\/\/alternative-citoyenne.fr\/index.php\/2021\/03\/04\/les-pcbs-en-pays-de-lor\/","title":{"rendered":"Les PCBs en Pays de l&#8217;Or"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Qu&#8217;appelle-t-on PCB ?  D&#8217;o\u00f9 vient la pollution aux PCBs ?  Le Pays de l&#8217;Or est-il concern\u00e9 par cette pollution ?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><br><strong>PCB qu&#8217;est-ce que c&#8217;est ?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Les polychlorobiph\u00e9nyles\/polychloroterph\u00e9nyles commun\u00e9ment nomm\u00e9s PCB sont des produits de<br>synth\u00e8se abondamment fabriqu\u00e9s entre les ann\u00e9es 30 et 80. Ces substances tr\u00e8s stables thermiquement<br>\u00e9taient utilis\u00e9es comme plastifiants, fluides caloporteurs et isolants \u00e9lectriques.<br>Malheureusement les PCBs sont aussi des polluants organiques persistants, bioaccumulables,<br>difficilement biod\u00e9gradables, tr\u00e8s toxiques avec de nombreux effets neurologiques ou<br>endocriniens, class\u00e9s en tant que substances probablement canc\u00e9rig\u00e8nes pour l\u2019homme.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><br><strong>Pourquoi une pollution aux PCBs ?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La pr\u00e9sence des PCB dans l\u2019environnement est d\u2019origine exclusivement humaine.<br>Lors de l\u2019incendie de la raffinerie de Feyzin pr\u00e8s de Lyon le 4 janvier 1966 des transformateurs se sont<br>&#8220;r\u00e9pandus&#8221; dans le Rh\u00f4ne, o\u00f9 les s\u00e9diments, les algues et les poissons, sp\u00e9cialement les poissons de<br>vase ont eu leur chair impact\u00e9e, et ceci pour des g\u00e9n\u00e9rations.<br>De nos jours, une autre cause de leur introduction dans l\u2019environnement est le d\u00e9chet urbain :<br>condensateurs, r\u00e9sines, mati\u00e8res plastiques, etc. qui, en d\u00e9charge ou incin\u00e9r\u00e9s, relarguent encore des<br>PCBs qui se volatilisent dans l\u2019environnement par le biais des retomb\u00e9es atmosph\u00e9riques.<br>Et m\u00eame si le Rh\u00f4ne en contient, les PCBs \u00e9tant des substances hydrophobes, ils se concentrent plut\u00f4t<br>dans les s\u00e9diments du Rh\u00f4ne, pour finir dans la mati\u00e8re grasse des \u00eatres vivants.<br>Trouver des PCBs dans une analyse d&#8217;eau d\u00e9noterait une tr\u00e8s forte contamination. Aujourd&#8217;hui, la<br>pr\u00e9sence de PCBs est toujours test\u00e9e dans l&#8217;eau potable de Marseille, donc l&#8217;affaire PCB n&#8217;est pas encore<br>class\u00e9e. Par contre, elle n&#8217;est pas test\u00e9e dans l&#8217;eau potable du canton du pays de l&#8217;Or, alors qu&#8217;environ<br>80% de cette eau provient du canal d&#8217;irrigation du Bas Rh\u00f4ne, du nom de canal Philippe-Lamour.<br>Note : il n&#8217;y pas de limite max de qualit\u00e9 officielle pour les PCBs dans l&#8217;eau potable.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><br>Il y a-t-il une pollution aux PCBs sur le canton du pays de l&#8217;Or ?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Une <a href=\"http:\/\/www.occitanie.developpement-durable.gouv.fr\/IMG\/pdf\/Contamination-PCB_Dept_34_cle2b531e-1.pdf\">carte de la DREAL Occitanie<\/a> montre en 2015 des PCBs dans les s\u00e9diments du canal du port de<br>Carnon. La m\u00eame carte montre aussi des PCBs dans les s\u00e9diments du Lez vers Lattes, donc probablement<br>aussi dans le Port de Palavas.<br>\u00c9galement, sur la <a href=\"https:\/\/www.rhone-mediterranee.eaufrance.fr\/sites\/sierm\/files\/content\/2019-02\/20190205-FIG-Carte_des_interdictions_RM-v01.pdf\">carte 2019<\/a> des interdictions de commercialisation et consommation des esp\u00e8ces de<br>poisson (toujours en vigueur). Le fleuve Vistre qui alimente le port du Grau du Roi est en rouge sur toute<br>sa longueur (interdiction de p\u00eache totale)<br>Si la persistance des PCBs dans l&#8217;environnement est de l&#8217;ordre du multiple de centaine d&#8217;ann\u00e9es, il doit<br>encore en rester en 2021 dans les s\u00e9diments de tous ces ports.<br>La DREAL Occitanie <a href=\"http:\/\/www.occitanie.developpement-durable.gouv.fr\/contaminations-en-toxiques-des-cours-d-eau-r1757.html\">stipule<\/a> d&#8217;ailleurs par d\u00e9partement les zones les plus touch\u00e9es &#8220;<em>Les secteurs<br>aujourd\u2019hui identifi\u00e9s comme les plus touch\u00e9s au plan environnemental en Languedoc-Roussillon sont<\/em><br>[&#8230;] ; <em>le Lez et le canal Philippe-Lamour dans l\u2019H\u00e9rault <\/em>; [&#8230;].&#8221;<br>Donc il y a tr\u00e8s s\u00fbrement des PCBs dans les s\u00e9diments de l&#8217;\u00e9tang de l&#8217;Or et cours d&#8217;eau locaux.<br>Texte publi\u00e9 sur le site : <a href=\"https:\/\/gaucheecologie.wixsite.com\/cantondemauguio\/des-pcbs-en-errance\">https:\/\/gaucheecologie.wixsite.com\/cantondemauguio\/des-pcbs-en-errance<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les PCBs nous arrivent principalement du canal du Bas Rh\u00f4ne, et des lixiviats des anciennes d\u00e9charges (Plagnol sur l&#8217;\u00e9tang de l&#8217;Or?).<\/p>\n","protected":false},"author":3,"featured_media":1175,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-1174","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-environnement"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les PCBs en Pays de l&#039;Or - Alternative Citoyenne - Mauguio &amp; 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